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TT: Tiefe Temperaturen

TT 19: Transport - Nanoelectronics I: Spintronics and Magnetotransport

TT 19.1: Talk

Monday, March 7, 2005, 10:00–10:15, TU H3027

Dielectric function of 2DEG with Rashba spin-orbit interaction — •Mikhail Pletyukhov¹ and Vladimir Gritsev² — ¹Institute for Theoretical Solid State Physics, University of Karlsruhe, Germany — ²Department of Physics, University of Fribourg, Switzerland

We study how the dielectric function of two-dimensional electron gas is modified due to Rashba spin-orbit interaction. We present the results of our calculations for finite momenta and frequencies. We discuss the modification of plasmon spectrum due to spin-orbit coupling, and make estimates for quasiparticle lifetime for different values of Rashba coupling parameter.